Machine to pierce a plurality of holes in a wheel hub shell for short spokes



Fell).v 13, 1934. H. TORMYN ET AL 1,946,991

MACHINE TO PIERCE PLURALITY OF HOLES IN A WHEEL HUB SHELL FOR SHORTSPOKES Filed July 29. 1932 4 Sheets-Sheet l www Feb. 13, 1934. H. ToRMYNET Al. 1,946,991

MACHINE TO PIERCE A PLURALITY OF HOLES IN A WHEEL HUB SHELL FOR SHORTSPOKES Filed July 29. 1952 4 Sheets-Sheet 2 /23 /20 /aa /az /ff Feb. 13,1934. H* TORMYN ET AL 1,946,991

MACHINE To PIERCE A PLURALITY oF HoLEs 1N A WHEEL HUB SHELL FOR sHoETsPoHEs Filed July 29. 1932 4 Sheets-Sheet 5 N YL eq E

Feb. 13, 1934. H. ToRMYN ET AL 1,946,991

MACHINE TO PIERCE A PLURALITY OF HOLES IN A WHEEL HUB SHELL FOR SHORTSPOKES y zA fl,

Patented Feb. i3, 1934 NETE MACHNE T EERCE A PLURALTY GF HGLES IN A.WHEEL HUB SHELL SHORT SPOKES FOR Application .lilly 29, 1932. Serial No.625,990

16 Claims.

This invention relates to the manufacture of wire wheels and hasparticular reference to the piercing of a plurality of holes in the hubshell for the short spokes.

The press of the invention comprises the usual upright frame in which aplunger is reciprocably operated. The plunger has a tcp die xed theretowhich cooperates with a die shoe structure therebelow, the die shoestructure having suitable holders with punches mounted therein to punchholes in the hub shell when the hea-d is moved downward on to the basestructure. Each operation of the plunger will punch all of the holes forthe shorter spokes in the hub shell.

On the drawings:

Figure 1 is a front view of the press.

Figure 2 is a side view of Figure 1.

Figure 3 is an enlarged sectional detailed view o1 the mechanism forpunching the holes, the parts being shown in separated relation.

Figure 4 is a sectional view similar to Figure 3 but on a reduced scalebut showing the punches at the time they are forming the holes in thehub shell and taken on the line 4 4 of Figure 7.

Figure 5 is a sectional detailed view on the line 5-5 of Figure 4.

Figure 6 is a perspective view of the head for holding the releasingfingers.

Figure '7 is a View taken on the line '7--7 of J Figure 4 with partsbroken away and parts in section better to illustrate the structure.

Figure 8 is a perspective view of one of the cam blocks.

Referring to the drawings, the numeral 2 indicates the upright ci thepress. At the top of the press on a bracket 4 an electric motor 6 ismounted. The motor has the usual pulley 8 and drive belt 10 whichoperates the flywheel 12 of the press. The flywheel is secured to ashaft 14 which extends through the press and has a small gear Wheel (notshown) mounted on the opposite end thereof. The small gear wheel mesheswith the large gear wheel i6 secured to a shaft 18 having a crank 20formed thereon. The connecting rod 22 is mounted on the crank and hassecured thereto a crcsshead 24 which slides in the frame. The crossheadhas secured thereto the top die which forms the upper portion of the diefor punching the holes in the hub shell. The shaft 14 has a clutch atthe right hand end thereof in Figure l which is operated by a lever anda linkage 32 to throw the small gear which meshes with the gear wheel 16into and out of driving engagement with the shaft 14.

- When the shaft 14 makes one revolution the mechanism indicated as awhole at 34 will throw the clutch out of engagement with the small gearwheel. The details of this mechanism 34 and the clutch is not shown forthe reason that it is conventional and well known and forms no part ofthe invention. A brake drum is shown at 36, the brake shoes beingindicated at 38.

At the base of the press there is slidably mounted the plate having aplurality of pressure pins 42 resting thereon. A second plate 44 isslidably mounted below the plate 40 and is held in spaced relationthereto by means of the pins 45 which may be secured to both plates. Theupper ends of the rods 42 pass through the base member 48 of themechanism for punching the holes in the hub shell. The plate 44 hassecured thereto the piston rod 46 connected to a piston which operatesin a cylinder 4'7 to form an air cushion. The air is under pressure andconstantly urges the piston upward. The structure of parts 40 to 47,inclusive, will give a resilient mounting to parts of the die shoe ofthe mechanism.

Referring to Figures 3 and 4, it will be seen that there is shown indetail the top die or shoe 28 and lower die shoe 48 of the die. The dieShoe 48 comprises the flat lower member 50 and the annular upper member52. Each of these members has the lateral ears 54 and 56 provided withsuitable registering openings to receive the guide rods 58 rigidlysecured in the ears 60 of the head 28. A suitable bearing 62 is placedin the ears 56 to accommodate the guide rods 58. The members and 52 aresecured together by means of a plurality of machine bolts 64.

The upper member 52 of the die shoe 48 is open at its center and hasmounted therein the bearing ring 66 slightly enlarged at its upper endas indicated at 68. Slidably received in the ring 66 is the punch slideholder '70 which has at its lower 95 end an outwardly projecting ange72. The flange 72 and the side of the slide holder 'l0 cooperate withthe sides of the bearing ring 66 and its enlarged portion 68,respectively, for slidable engagement. Parts 68 and 'Z2 limit the upwardmovement of the slide holder 70. The member 50 has openings 74 thereinslidably to receive the pressure pins 42 constantly urged upward theirlower ends. The air cylinder 47 constantly urges the plate 40 upward andwill, therefore, push the pins 42 upward constantly to force the slideholder '70 upward so that the flange 7 2 will come into engagement withthe flange 68. This position of the parts is shown in Figure 3.

The slide holder 70 is bored and has mounted at its central portion thecircular die holder block or hub shell receiving member 78 securedthereto by means of the machine screws 80. The upper portion of themember 78 is suitably shaped as shown at 82 to receive the enlarged endof the hub shell 160. Suitable inclined passages 84 are provided in themember 78 and dies 86 are seated in enlarged portions of the passages atthe outer periphery of the member 78. The dies 86 may be heldin place bysuitable set screws, not shown. Behind the dies the passages 84 lead tothe center of the block to allow the punched out metal to fall to thebase of the press.

The slide holder has a plurality of equally spaced tines or upwardlyextending projections 100 formed therearound on the upper face thereof,the projections being ten in number. These projections deiine ten radialrecesses therebetween and in each recess there is slidably mounted apunch holder 102. Over the top of the slide holder 70 and the punchholders 102 there is secured the retainer ring 104 which incloses therecesses between the projections 100 and holds the punch holders 102 inplace. Suitable machine bolts 106 hold the ring 104 on the punch holder70 and a tongue and groove connection 108 positions the ring 104 withreference to the top of the slide holder 70. The punch holders 102 aretherefore radially slidably mounted in the slide holder 70.

In each punch holder 102 there are mounted two punches 110, each punchbeing held in position by means of a set screw 112 screwed into asuitable threaded opening in the punch holder 102. The two punches in aholder are not similarly positioned but one is positioned to punch ahole in the shell on a circumference different from the other. Thisdifference in position is represented by the passages 84 as shown inFigure 3. The retaining ring 104 has the cut-out spaces 114 to permitaccess to the screw 112 when the machine is assembled. Each punch holder100 is reduced at its outermost end and has two rollers 11S mounted on apin or shaft 116. These rollers cooperate with the cam blocks 120, oneof which is shown in perspective in Figure S and which will now bedescribed.

Referring to Figures 4, 7 and 8, the ten cam blocks 120 are mounted atthe interior periphery of the annular upper member 52 of the die shoe48. The member 52 has the groove 122 in which there is received thetongue 124 of the blocks 120. At the upperportion of the blocks 120 asecond tongue 126 is provided, w ich nts in a groove 128 of a retainingring 130 secured to the top of the member 52. The blocks 120 aresegmental and have the curved or conical inner surface 132 and thecurved outer surface 134. At the ends of each block 120 the flanges 136and finished inclined portions 138 are provided. The finished portions138 cooperate with flat portions 140 on the ends or" the punch holders102 while the flanges 136 cooperate with the rollers 118. The blocks 120are spaced and between each pair of blocks there nts the reduced end ofthe punch holder l02'and the rollers 118. This structure is best shownin Figure 7 at the upper right where the ring 130 is broken away.

The top die 28 has secured thereto by means of the machine bolts 142 theretaining and pressure transmitting ring 144. The ring 144 has theflange 146 projecting .inwardly at its lower portion which cooperateswith a flange 148 at Y the upper end of ya movable holding ring 150having a bottom surface 154 which cooperates with the surface 82 of theblock 78 to hold the hub shell 160 rigidly in position when the machineis in operation. Play is allowed between the ring 144 and the ring 150as shown at 156 and coil springs 158 mounted in recesses in the members28 and 150 constantly urge them apart.

A means is provided for pulling the hub shell 160 from the machine afterthe holes have been punched the-rein. This means comprises a block 162(see Figure 6) rigidly attached to the head 28 by means of the machinescrews 164 as shown in Figure 5. The machine screws 164 pass through theopenings 166 shown in Figure 6. The block 162 is recessed at its twoends as is shown 166 and a linger 170 is pivoted in each recess by meansof the pins 172. Coil springs 174 mounted in recesses 175 in the block162 and in the ringer 170 constantly urge the lower ends of the iingersoutwardly. The lower ends of the lingers are formed into hooks 176 whichare adapted to engage under the flange 178 at the narrow portion oi thehub shell 160. A cam member 180 having inclined sides 182 is adapted tooperate on the upper ends 184 of the lingers to force them outwardly oraway from each other and, consequently, to force the inner ends andhooks 176 inwardly. A coil spring 186 is mounted in registering recessesin the block 162 and the cam 180 and constantly urges the cani upward tothe position shown in Figure 4. When the block 28 raises the stem 188 onthe cam 180, it will strike the knock-out pin 190 (see Figures 1 and 2)to move the stem 188 downward and cause the cam 180 to force the upperends 184 oi the lingers 170 outward and the lower ends or hooks 176inward. This position or" the parts is shown in Figure 3 and will causethe fingers to release the hub shell. The successive movements of thelingers to grip and release the hub shell will be apparent from anexamination of Figure 4, the dotted and solid outline, respectively, inFigure 3. The operator will knock or push the punched hub shell from themachine immediately on its release by the hooks 176.

The machine of the invention punches twenty holes in the hub shell andaccordingly there are provided ten punch holders 102, each having twopunches 110. This is best shown in the plan view in Figure 7. Theupperbase member 52 has ten projections forming ten recesses, in eachrecess there being received one of the i unch holders 102. Ten camblocks 120 (Figure 8) are provided which are mounted as shown in Figures2, 3 and 7. These blocks are spaced from each other and between. theadjacent spaced ends the rollers 118 of the reduced end of the punchholder 102 operate. p

The operation of the device is as follows and will be understood from anexamination or Figures 3 and 4. 1n Figure the die or machine performedits work. tcp die or shoe 23 pushed downwar to cause the suriaces 82 andto grip the wheel hub 160. The slide holder 70 has also been forceddownward against the upward pressure of the pins 42. The downwardmovement of the slide holder 70 will cause the surfaces 140 on the endsof the die holders to ride on the inclined surfaces 138 on the camblocks to force the die holders 102 inwardly to cause the punches 110 topunch the metal from the hub to forni the spoke opening. The button ormetal punched out will slide down the passages 84 and drop into thecentral passage 192 formed in the members 787 70 and 52 and drop to thebottom of the machine, The nished surfaces `138Y on :the cam block 120are. inclined,.-,as.is best..

shownin vFiguresv 3 and: 4,- so4 thatthezwi'derporlanges `136: of thecam blocks to pull the punch holders 102v away from the hub: and pullthe fvpunchesy out Aofthe punchediopenings'in the shell. 1 The puncheswill be withdrawrrfrom theii` openings before the end'of the upwardlmovement of theblook- .so that a'continuedupward move-.- :mentzof thefhead will not cause :thepunches to,v tear the.spokef'openingzmadethereby. In thev downward movement of'thecrossheador plunger 24 and top'dieZS the bevelled edges 194 of the nger's v1'70willhave slipped over the'edge of the :flange 1'70 so that thefhookportion 176 will now .'engagewith the...interiori.portionv of the flange-.when thepplunger VrisesffThis engagement will pull'the wheel hub 160upward with theplunger.

Just before the plunger reaches'the upward limit Y :of :the stroke,the'knock-out pin 190 will strike Athefstem Y188 tofcause ittomovedownwardly and rx: cause .the carn1180 to `move `the upper ends184 of the fingers outwardly and move the hooks 176 f'inward or away.from the -iange l'lrto release the hub 16o. mWhen the shell isVreleased the oper,-v

J ator will use arstick or hishand to shove the shell #from thesmachine.VA new hub shell is now placed over the block '78 and the handle 30again oper ated to cause the .machine'to make one s troke.

The parts now will move from the position shown inFigure 3 Yto thatshownin Figure 4 and again "return to the position of Figure 3.A Duringthis operation the twentyholes in the hub shell will fhave been"punched.

We claim: :1. Ina machine vfor punching spo-ke holes in the hub of awire wheel, a'die shoe, a punch holder slide yieldablyir mounted. insaid shoe, a top die reciprocable relative to the die shoe; means Aonthe slide to receive a wheel hub,- means on said top die cooperatingwith the hub vreceiving means to hold the hub rigidly-in position,aplurality of punch holders slidably mounted 'in saidslide for movementtransversely to the movement of the slide, a plurality of punchesmounted inv said holders, means for` causing said holders to move towardthe wheel hubI tocause the punches to punch `a plurality `ofl spokeopenings entirely around the periphery thereof; said last namedV kmeansbeing operative only when the top die is moved to cause the holderslideto move.

2. In a machine for punching spoke holes in the hub of a wire wheel, adie shoe, a movable annular punch holder slide mounted in said shoe, aplurality of projections on said slide defining recesses therebetween,punch holders slidablf,7 received in said recesses, punches mounted inAsaid holders,

stationary cam means on said die shoe engageable cable top die, means'on .the punch holderto receive a wheel hub, means on said top'diecooperat- -ing with the hub receiving means to hold the hub .rigidly inposition, a plurality ofpunch holders .slidably mounted in said slide, aplurality,oi

punches mounted in said holders, means for causing said holders tc movetoward the-wheel hub to cause the punches to punch spoke openingstherein when the top` die is moved toward the die shoe, and means on thetop die to raise said wheel hub from the die shoe after the punchingoperation hasbeen performed.

Ina machine for punching spoke .holes in the hub of a wire wheel, a dieshoe, an annular #punch holder slide movably mounted on said shoe,

a wheel hub receiving block on the slide, punch `holders incvablymounted in said slide, punches in said holders, a plurality of camblocks mounted in said shoe and engageable by the said holders, a topdie over said shoe adapted .to descend and rigidly hold the wheel hubinpositon, said downward Vmovement .of the head moving said slidedownward and causing theholders to move over the. cams to cause thepunches to punch spoke openings in the wheel hub. -ri

5. In a machine for punching spoke holes in the hub of a wire wheel, adie shoe, an annular punch holder slide movably mounted in said shoe, awheel hub receiving block on the slide, punch holders movably mounted insaid slide, punches-jin said holders, a pluralityV of cam blocks mountedin said shoe and engageable by the said holders, a reciprccable top dieover said shoe adapted to descend on and rigidly hold the wheel hub inposition, said downward movement of the head mov with the top die whenthe said top die isfraisedrr- 6. In a machine for punchingispoke-holesin the hub of a wire wheel, a die shoe, an annular punch holder slideresilientlyfmounted inl said shoe, a wheel hub receiving blockon theslide, punch holders movably mounted in said slide, punches insaid-holders, a plurality of cam blocks mounted in said shoe andengageable by the said holders, a reciprocable top die over said holderadapted to descend and rigidly hold the wheel hub in position, saiddownward movement of the top die moving said slide downward and causingthe holders to move over the cams to cause the punches to punch spokeopenings in the wheel .hub, means for withdrawing the wheel hub with thetop die when the said head is being raised, and means to release the hubwhen the top die is fully raised.

7. In a machine for punching spoke holes in the hub of a wire wheel, adie shoe, a punch holder slide resiliently mounted in said shoe, a wheelhub receiving member secured to the slide, a plurality of punch holdersmounted for sliding movement in said slide, punchesmounted in saidholders, cam means mounted adjacent said slide, flanges on said cammeana'rollers on said holders cooperating with said llanges, cooperatingsurfaces on said cam means and said holders, a reciprocable top die,means on the top die cooperating with said hub receiving member to holdthe hub rigidly in position, the downward movement of said top diecausing the engagement of said hub holding elements and causing thecooperating surfaces on said holders and said cam means to cause theholders to move inwardly and cause the punches to punch spoke holes inthe` Wheel hub, the up'- Ward movement o said top die causing therollers to engage the iianges on the earn means to "thdravv the holdersand punches from the 8. ln a machine or" the class described having areciproca 'le head, as a suo-corlilination, a means to raise a wheelnulo from the machine comprising a block secured to the head, aplurality of fingers pivoted to the block, a noch end on the re nt meansurging the hook ends away from the block and into engagement under theiiange oi the wheel hub, a oevelled edge on the 'finger ends to causethem to ride over the flange when the head descends, and a cani ingotherend or" the lingers to press them apart against the tension of thesprings to cause the lingers to relca e the wheel huh, said releasingaction taking place after the head has heen -e for punching spoke holesin the huo of wire Wheel, a die hoe, a punch holder slide mounted ichreciprccaole movement in said shoe,` a plura"ty of punch holdersslidahly mounts in said slide holder, punches in said punch holders, a'-.vheel huo receiving block mounted in the holder slid concentricallytherewith, said block having a plurality oi' openings complementary tothe punches to receive the punch ends and punched out or" metal when thepunches are operative, a top descenda'ole on the holder slide to causethe slide to move, and means on the die shoe cooperating with the punchholders to cause punch holders to move toward the wheel huh to punchspoke openings therein.

l0. In a machine for punching spoke holes in the hub of a wire Wheel, adie shoe, a punch holder slide mounted for reciprocaole movement in saidshoe, a plurality of punch holders slidably mounted in said slideholder, punches in said punch holders, a Wheel huo eceiving hloclzmounted in the holder sli'ie concentrically therewith, said block havinga plurality of openings complementary to the punches to receive t`-epunch ends and punched out pieces of metal When the punches areoperative, a top die descendahle on the holder slide to cause the slideto move, means on the die shoe cooperating with the punch holders tocause the punch holders to move toward the Wheel hul:` to punch spokeopenings therein, and means to cause the holder slide to move in thereverse direction when the top die is Withdrawn.

ll. ln a machine for punching spolre holes in the hub of a wire Wheel, adie shoe, a reciproca'ole punch holder slide mounted in the shoe,punches mounted -for slidahle movement in the punch holder, means toactuate the punches when holder is moved, means for supporting the hub,a top die reciprocahle relative to the holder slide to move the same,the reciprocation of said top die causing the movement of said holderslide to cause said punches to move toward the huh to punch spokeopenings therein.

12. In a machine for punching spoke holes in the hub or" a Wire wheel, adie shoe, a reciprocalole punch holder slide mounted in the shoe,punches mounted for slidaole movement in the punch. holder, means toactuate the punches when the holder is moved, means for supporting thehuh, a top die reciprocaole relative to the holder slide to move thesame, the reoiprocation of said top die causing the movement of saidholder slide to cause said punches to move toward the hub to punch spokeopenings therein, and means on the top die to raise the huh from the dieshoe after the holes have been punched.

13. ln a machine for punching spoke holes in the hub of a Wire Wheel, a4die shoe, a circular reciprocahle punch holder slide mounted in theshoe, a plurality of punch holders mounted entirely around the holderslide for slidaole movement therein, punches in the punch holders,

means mounted in the die shoe concentrically with the punch holderslide, said cam means adapted to cause the operation oi the punches whenthe holder slide is moved, and means to reciprocate the punch holderslide to cause the punches to punch holes in the hub.

le. ln a machine for punching spokes in the hub of a Wire Wheel, a dieshoe, a circular reciprocable punch holder slide mounted in the shoe, aplurality of punch holders mounted entirely around the holder slide forslidable movement therein, punches in the punch holders, cam meansmounted in the die shoe concentrically with the punch holder slide, saidcam means adapted to cause the operation of the punches when the holderslide is moved, means to cause the reclprocation of the punch holderslide to cause the punches to punch holes in the huo, and inea-ns onsaid last named means to Withdraw the huh from the die shoe after thepunching of the holes.

15. In a machine for punching spoke holes in the of a wire Wheel, a dieshoe, an annular punch holder slide reciprocably mounted in said a huhreceiving member mounted concentrlcally with the holder, a plurality ofpunch holders mounted in the slide for movement transversely to themovement of the slide, punches in said holders, a plurality of camsannularly arranged adjacent the punch holders and adapted to operate theholders to cause the punches to punch spoke openings in the hub when theholder slide is moved, and means movable simultaneously to grip and holdthe Wheel hub on the receiving member and to move the holder slide tocause te punching or spoke holes.

16. ln a machine for punching spoke holes in the huh of a wire Wheel, adie shoe, an annular punch holder slide reciprocably mounted in saidshoe, a huh receiving member mounted concentrically with the holder, aplurality or punch holders mounted in the slide for movementtransversely to the movement of the slide, punches in said holders, aplurality or cams annularly arranged adjacent the punch holders andadapted to operate the holders to cause the punches to punch spokeopenings in the hub when the holder slide is moved, means movablesimultaneously to grip and hold the Wheel hub on the receiving memberand to move the holder slide to cause the punching of the spoke holes,means on said last named means to Withdraw the wheel hub from the dieshoe when said first named means is moved to release the slide holder.

HERMAN TORMYN.

FRANK F. WIETHOFF.

